02 wrx, stock.
After replacing my drivers side head gasket a few months ago (long story), i now have coolant steam coming out of my exhaust, followed by a rough idle and engine code P1507 Idle control system malfunction (fail-safe).
Is there ANY other possible cause besides an internal head gasket leak?
Unless someone can convince me otherwise (please do...) i'm seeing this as a definite internal head gasket leak.
Basically i'd like to find what caused this leak before i do it again.
A few questions i'm looking to have answered.
-Are the stock Head Bolts "Torque To Yield"?
I followed the FSM when reinstalling the head reusing the stock bolts. (Torquing, backing them off - Retorquing - Backing them off.. etc..) perhaps this was what caused my current leak? I looked for a procedure on reuseing head bolts and found nothing.
I'm going to do a compression test right now and update.
Any guidance, help, advice, etc. is MUCH appreciated.. I need to fix this car...!